Only VPP can provide you with the assurance that, despite the noisy and chaotic conditions that are always a part of an emergency, your hands-free emergency phone system will be effective in establishing two way communication. With traditional speaker phone technology, only the speaker or the microphone will work at one time. If there is environmental noise or the person using the emergency phone is anxious and can’t manage the give and take of a speaker phone situation, traditional telephones may not enable effective communications. With VPP’s exclusive TrueTalk™ full duplex technology, the phone’s speaker and microphone work at the same time. And that makes a major difference. VPP’s emergency speaker phones operate with the same clarity and effective communication of a handset phone.